- Postcode district
- TN16
- Survey
- Free for new and replacement doors
- Typical lead time
- Typically 8–10 weeks from survey sign-off
- Guide price
- From £5,095 inc VAT
- Nearby
- Oxted, Sevenoaks, Orpington
- Building rules
- England
Is a timber and alu-clad sliding door a good fit for your home in Westerham?
A few practical points decide whether timber and alu-clad sliding doors suit a particular room and opening:
If your Westerham home is a period property or a barn conversion, timber and alu-clad sliding doors can bring in more light without the modern look of a metal frame.
Oak floors, exposed beams or a timber kitchen in your Westerham home? Matching the inside finish of the door ties the new glazing into the room.
- Stains, paints and lacquers are sprayed in the factory under controlled conditions, giving a more even and longer-lasting coat than a finish brushed on site.
- Engineered timber is laminated from several layers with the grain opposed, so frames resist the twisting and warping that solid timber can suffer as the seasons change.
- Scratches and dents on internal timber faces can usually be sanded and refinished locally, rather than needing a whole panel replaced.
How much sun will a door in Westerham get?
Because Westerham sees long summer days (about 16 h 36 min) and short winter ones (about 7 h 52 min), the elevation your door faces makes a real difference. With the midday sun at about 15° in winter, a south-facing door brings light well into the room; a west-facing door catches hot late-afternoon sun in summer.
Timber and alu-clad sliding doors prices in Westerham
These are guide prices for fitted doors at a standard height, including VAT. They run from an entry-level system to a premium one at the same size; the survey confirms which suits your opening.
| Overall width | Typical panels | Guide price (fitted, inc VAT) |
|---|---|---|
| 1.5 m | 2 panels | £5,095–£6,195 |
| 2.1 m | 2 panels | £5,995–£7,395 |
| 3.0 m | 2 panels | £7,495–£9,095 |
See every size on the timber and alu-clad sliding doors page or try the guide price tool.
What happens when you order timber and alu-clad sliding doors in Westerham?
Once the opening is measured, nothing is ordered until you sign off the specification. Lead time is typically 8–10 weeks from survey sign-off. Our fitters protect floors, remove the old door, install and seal the new one and leave the area clean — usually 1 day for a two-panel swap; 1–2 days for larger doors for a door like this.
Do you need approval in Westerham?
In England, a replacement sliding door is a controlled fitting under the Building Regulations. In an existing home, a door with more than 60% glazing must reach a U-value of 1.4 W/m²K or better (or a Doorset Energy Rating of band C) under Approved Document L, and glass in doors must be safety glazing under Approved Document K. We arrange compliance through a competent person scheme installer or by notifying Building Control, and you receive the certificate.
Finishes and extras for timber and alu-clad sliding doors
- Alu-cladding. A powder-coated aluminium outer shell in a standard or RAL colour, with timber left on show inside.
- Interior finish. Clear lacquer, a wood stain or a painted colour, chosen to match floors, beams or kitchen units.
- Glass. Double or triple glazed safety glass, with slim glazing bars available for a period look.
Questions about timber and alu-clad sliding doors in Westerham
Is the price different in Westerham?
No. Guide prices for timber and alu-clad sliding doors are the same across mainland Britain, including Westerham. The fitted price depends on size, system, glass and finish, and any structural work, all fixed in your written quote after survey.
How big can a timber sliding door be?
A timber sliding door in our range is typically about 1.5 m to 4.8 m wide overall, in two to four panels, at standard 2.1 m height or taller on request. Individual panel sizes depend on the system and glass weight; larger panels usually move to lift and slide hardware so they stay easy to open. Sizes are confirmed after survey.
Are timber sliding doors energy efficient?
Timber sliding doors are energy efficient because wood insulates naturally, and engineered timber systems typically achieve whole-door U-values comparable with good thermally broken aluminium, depending on the glass. In England, a new or replacement door in an existing home with more than 60% glazing must reach 1.4 W/m²K or better, and the glazing is specified to meet that. Wales, Scotland and Northern Ireland set their own energy rules.
How often do timber sliding doors need treating?
Timber sliding doors need the outside re-coated every few years, depending on how exposed the elevation is and which finish system is used; doors facing full sun or coastal weather need attention soonest. Alu-clad doors avoid this, needing only an occasional wash outside. Inside, timber only needs wiping and an occasional refresh of the lacquer or oil, and a clean track protects the rollers.